Model: 1651708-1

Spur Antibacklash Gear

Special Features:

One preload indication hole 0.0625 in. Diameter located axially through gear body both gears

Properties:

Pitch Diameter
2.2500 inches
Teeth Quantity
72
Bore Style
Plain both ends
Outside Diameter
2.312 inches
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.239 inches second end
Face Width
0.188 inches
Bore Diameter
0.249 inches both ends
Hub Style Designator
Split second end
Hub Diameter
0.312 inches second end
Clamping Surface Length
0.239 inches second end
Precision Classification
Quality number 12
Material
Aluminum alloy 2024 first gear
Material
Aluminum alloy 2024 second gear
Material
Steel comp 303 hub
Material
Steel comp 303 spring
Material Specification
Astm a582 assn standard single material response hub
Material Specification
Qq-a-225/6 federal specification single material response first gear
Material Specification
Qq-a-225/6 federal specification single material response second gear
Material Specification
Qq-w-423, cond b federal specification single material response spring
Surface Treatment
Anodize first gear
Surface Treatment
Anodize second gear
Surface Treatment
Passivate hub
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response first gear
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response second gear
Surface Treatment Specification
Qq-p-35, type ii federal specification single treatment response hub
Style Designator
Protruding hub
NSN
3020-01-395-3984
Part Number
1651708-1
Description
Gear,antibacklash,spur
CAGE
29964

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

Part 1651708-1 NSN 3020-01-395-3984

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
Concept No.:
App. Key:
AC
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
121870
UFC:
64910
LTL:
77.5
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately

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